etm is an acronym for Event and Task Manager. It provides a simple, intuitive format for using plain text files to store event, task, and other data items, a command line interface for viewing stored information in a variety of convenient ways, and a cross-platform, PyQt-based GUI for creating and modifying items as well as viewing them. Displayed items can be grouped by date, context, keyword, or project and can be filtered in various ways. A display of busy and free times is also supported, as is a ledger view of time spent that is suitable for client billing. Alarms are supported for events and repetition for both events and tasks in a powerful and flexible manner.

Event Calendar started as a replacement for an antiquated script to generate meeting invites with attached ical. It has since grown to be a full fledged event calendar system for public events. Important to Event Calendar is the theory of multiple interfaces, where any data in the system should be accessible in a multitude of ways. For events, this means via nice HTML, iCal, XML, and JSON. Event Calendar also includes integration with Google Maps for directions to event locations.

The Danica Patrick 2009 Calendar features Indy Racing League star Danica Patrick. It's packed with many high quality photographs and graphics that capture Danica in action both on and off the track. It features changing imagery each month, a 3-year annual view, an appointment scheduler, a To Do manager, mouseover event viewing, an event countdown feature, and links to Danica's Website.

EasyPhpEventCalendar is a PHP class that allows you to display an event calendar on your Web site. The calendar is clean, easy to integrate, easy to use, and easy to navigate. It will display events up to 12 months in the future. The event itself can be styled and formatted as you wish by providing the appropriate HTML markup. You can add as many events as you would like. You can use full HTML markup to enhance the appearance of the events. You can add events manually, read events from files, or read them from a database. How you manage your events is up to you; the class is designed to display them only.

Bedework is an open-source enterprise calendar system that supports public, personal, and group calendaring. It is designed to conform to current calendaring standards (iCalendar RFC 2445 iCal, iTIP: RFC 2446, CalDAV: RFC 4791, VVENUE) with a goal of
attaining strong interoperability between other calendaring systems and clients (Mozilla Lightning, Apple iCal). Bedework is built with an emphasis on higher education, though it is used by many commercial
enterprises. You may choose to deploy Bedework for public events calendaring, personal calendaring and
scheduling, or both. It is suitable for embedding in other applications or in portals and has been deployed across a wide range of environments.

The ApPHP Calendar (ApPHP CAL) is a powerful PHP calendar script that may be easily integrated and used with various PHP projects, such as schedulers, event processors etc. The calendar is very simple to install, implement, and use. It has a user-friendly interface and navigation. It can be viewed in various ways: yearly, monthly, weekly, and daily.